Bottle stopper



March 23, G. PROTASOFF BOTTLE STOPPER Filed Jan. 2, 1952 INVENTOR- G'eary Pro 2a. 5 06/ BY WYM ATTORNEYS BOTTLE STOPPER George Protasofl, Baltimore, Md. Application January 2, 1952, Serial No. 264,546

1 Claim.

This invention relates to a bottle stopper.

An object of this invention is to provide a bottle stopper for use on vacuum bottles which is so constructed and arranged that steam or air pressure within the bottle may be relieved without removing the stopper.

Another object of this invention is to provide a bottle stopper which includes a cam-shaped operating means for expanding or releasing the stopper.

A further object of this invention is to provide a bottle stopper which is simple in construction so that it can be made at small cost.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawing:

Figure 1 is a detailed side elevation of a bottle stopper constructed according to an embodiment of this invention showing the stopper in released position.

Figure 2 is a view at right angles to Figure 1.

Figure 3 is a sectional view taken on the line 3-3 of Figure 2 showing the device in sealed position.

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure 3.

Referring to the drawing, the numeral Ill designates generally a cylindrical body which is formed of rubber or other distortable material, and the body I is formed on the periphery thereof with ribs I3 and'is also formed with a central bore II. A valve body I2 is disposed within the bore I I and is secured as by a crimping I4 to an upwardly dished plate I5. The valve body I2 is formed with a central bore I6 which communicates with a threaded counter bore I1, and the junction between the counter bore I1 and the bore I6 forms a tapered valve seat I8.

An internally threaded sleeve I9 is threaded on the exterior of valve body I2, and sleeve I9, as shown in Figure 3, projects partly into the distortable body ID. A valve plug 20 is adapted to engage on the valve seat I8 for closing the bore I 6, and valve plug 20 is carried by a threaded shank or screw 2| having a head or knob 22 at its upper or outer end. The valve body I2 is formed with a laterally extending pressure release passagev 2.3 communicating with bore I 1 above valve seat I8, and lateral passage 23 communicates with a longitudinal release passage 24 formed longitudinally in the valve body I2.

, A pressure plate 25 is mounted on the outer end of body III being formed with a central opening 26 through which the sleeve I 9 loosely or slidably engages. A pair of cam members 21 are rockably mounted on pivot members 28 carried by and extending into sleeve I 9. The cam members 21 engage the upper side of pressure plate 25, and cam members 21 are formed integral with a U-shaped lever 29 engaging about the sleeve I9 and formed with a lip or finger engaging member 30 by means of which the U-shaped member or lever 29 may be rocked downwardly to pressure applying position or may be raised upwardly to a pressure released position.

. In the use and operation of this device, the distortable stopper body I0 is inserted into the neck of a bottle, which preferably is adapted to have fluid under pressure therein. The device hereinbefore described is adapted to be inserted into the neck of a bottle which is preferably a vacuum bottle and which is adapted to contain hot liquids. The body I0 is inserted into the bottle neck at the time the cam operating lever 29 is in its up-raised and released position, which is the position shown in Figure I. When body I 0 is disposed within the bottle neck, lever 29 is rocked downwardly to the position shown in Figure 3 whereby cam members 21 will exert pressure on plate 25 and cause an upward pull on dished plate I5 to thereby eifect an expanding of body I0. If it is desired to release any pressure which is present within the bottle, the pressure may be released without removing the stopper by unthreading the screw shank 2| so as to unseat the valve plug 20 from seat I8. The pressure will then pass through bore I6 into bore I! through lateral passage 23 and out through longitudinal passage 24 into the atmosphere.

I do not mean to confine myself to the exact details of construction herein disclosed, but claim all variations falling within the purview of the appended claim.

What is claimed is:

A bottle stopper comprising a cylindrical distortable body formed with a central bore, a discshaped plate bearing against the inner end of said body, a valve structure in said bore formed of a cylindrical housing having a central passage with a valve seat at the outer end of said passage, said housing being fixed at its inner end to said plate, a valve plug engageable on said seat, a threaded shank fixed to said plug and extending from the outer end of said body, said housing having a laterally extending exhaust passage communicating with said bore above said seat. a longitudinal relief passage communicating with said exhaust passage, an outer plate loose about Number said housing and bearing against the outer end 1,297,113 of said body, a U-shaped lever rockably carried 2,315,538 by said housing, and a pair of cams carried by 2,562,826 said lever bearing against said outer plate. 5

GEORGE PROTASOFF.

. Number References Cited in the file of this patent 162,338

UNITED STATES PATENTS Number Name Date 10 1,059,383 Nemec Apr. 22, 1913 Name Date Domenico Mar. 11, 1919 Moeller Apr. 16, 1943 Sharp July 31, 1951 FOREIGN PATENTS Country Date Austria July 15, 1948 

